Age

40–85

Sex

ALL

Healthy volunteers

Not accepted

Patients with other serious respiratory diseases
Patients with pulmonary hypertension other than group 3
Patients with right heart hypertrophy or dysfunction not caused by chronic obstructive pulmonary diseases
Patients with limited life expectancy
Patients with history of tracheal intubation or stoke, acute coronary syndrome in 6 months
Psychopath or addict

Registry for Chronic Obstructive Pulmonary Disease With Pulmonary Hypertension in China